【摘要】 为了进行声呐信号处理,作者用高速数字信号处理芯片TMS320C25构成信号处理模块,再由4个模块与主机IBM-PC/AT构成主从分布式系统。每个信号处理模块由两片C25构成,C25之间以及各自与AT机之间均采用双端口存储器通讯。在设计中提出了C25片外RAM既可充当程序RAM又可充当数据RAM的技巧,该模块的原理调试获得成功,波束形成的结果令人满意,本文着重介绍硬件设计方法和实用技巧。更多还原

【Abstract】 To meet the need of sonar signal processing, a signal processing module based on TMS320C25 is designed. Four modules with IBM-PC/AT as their host form a signal processing system, and each of them is composed of two C25 chips. Dual-port RAMs are used to transfer the program and data between C25 chips and PC/AT, and an approach of using external RAMs of C25 as either program or data memory is presented. An emulated beam-pattern is satisfactory. The paper emphasizes on the hardware design together with practical techniques.更多还原